ITPEC IP April 2023 Question 75
ITPEC IP April 2023 — Question 75 of 100
A QR code can be read from any direction because its position-detection patterns allow a reader to determine its orientation. The three large finder patterns at its corners help a scanner locate, align, and decode the two-dimensional symbol even when it is rotated. QR codes also include error-correction capabilities.
Answer (c)
Why not others:
- (a) QR codes can encode several modes of data and are not limited to single-byte alphanumeric characters and symbols
- (b) a two-dimensional QR code generally stores much more information than a conventional one-dimensional barcode
- (d) a QR code is a matrix of modules, not three stacked barcode layers
Key rule: A QR code is a two-dimensional matrix code with finder patterns that enable high-capacity, omnidirectional reading.
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